... battery with 8--10 hours playtime 9.Power supply: built-in 3.7V lithium battery or USB 5V supply 10.120s auto shut ... off 11.Interface : USB 2.0 12.Operation system: win ... : Red,Blue,Purple,Black,pink,Silver-white 14.Accessories: CD, USB cable, key buckle, instruction manual, clamshell and gift box etc